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1.发明授权公开(公告)号：US11629654B2
公开(公告)日：2023-04-18
申请号：US17651139
申请日：2022-02-15
摘要： An engine includes at least one cylinder, a first intake valve and a second intake valve associated with the cylinder, to control a flow of intake air from a first intake duct and a second intake duct, respectively. The two intake ducts communicate with a common intake manifold, so as to receive air at the same pressure. During the intake stage, in each cylinder operating cycle, initially an opening and closing movement of only the first intake valve is activated, while the second intake valve remains closed and, subsequently, an opening and closing movement of only said second intake valve is activated, while the first intake valve remains closed. In this way, the two air flows at the same pressure entering the cylinder give rise to a high turbulent kinetic energy, to the advantage of combustion efficiency and reduction of harmful exhaust emissions.
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公开(公告)号：US20230112941A1
公开(公告)日：2023-04-13
申请号：US17963130
申请日：2022-10-10
发明人： Motonari YARINO , Noriyuki TAKADA , Atsushi INOUE
摘要： A combustion chamber structure in which an installation hole of the injector is improved to realize a rapid combustion and to reduce an unburned hydrocarbon. In the combustion chamber, a leading end of an injector is withdrawn from an upper end of an opening of an installation hole, and an additionally expanded surface area is formed on an upper inner surface of the installation hole from a portion to which the leading end of the injector is situated. to an opening end of the installation hole. An angle between the additionally expanded surface area and a joint surface of a cylinder head is narrower than an angle between a center axis of the installation hole and the joint surface.
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公开(公告)号：US11608771B2
公开(公告)日：2023-03-21
申请号：US17199800
申请日：2021-03-12
发明人： Yehuda Shmueli , Eitan Shmueli , Doron Shmueli
摘要： An internal combustion-type engine or powertrain that is capable of burning wet-alcohol fuel mixture and including a piston reciprocating within a cylinder attached to a cylinder head and connecting to a crank shaft via a connecting rod. An intake cam and valve is mounted within an intake port formed in the cylinder head and an exhaust cam and valve is mounted within an exhaust port also formed in the cylinder head. A pressurized fuel source is introduced into the cylinder by a fuel injector and the percentage of water in the alcohol/water mix operates to prolong the cylinder pressure in order to increase a mean effective pressure (IMEP), leading to a higher torque (improved Brake Mean Effective Pressure—BMEP) of the engine via a longer pressure pulse attained during the period of preferred mechanical advantage of the crank-arm of the engine.
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公开(公告)号：US11578678B2
公开(公告)日：2023-02-14
申请号：US17132444
申请日：2020-12-23
发明人： Thomas Baranowski , Maik Broda , Pascal Rebmann , Markus Franzen
摘要： A method for producing a cast aluminum component having at least one reinforcing element arranged therein includes producing a core by placing at least one reinforcing element in a first mold and at least partially overmolding the at least one reinforcing element with a foam material. In the alternative, or in addition to, a core is produced by surrounding an inner element composed of a foam material by at least one reinforcing element. The method includes placing the core in a second mold and pouring liquid aluminum into the second mold and overcasting the core such that the liquid aluminum at least partially surrounds the core and the foam material is at least partially removed during the overcasting.
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公开(公告)号：US11578644B2
公开(公告)日：2023-02-14
申请号：US17442657
申请日：2020-03-26
摘要： The present invention relates to a gas intake device (1) for a cylinder of an internal-combustion engine. The gas intake device comprises two intake pipes (5a, 5b), two intake valves (4), two intake valve calibration parts (6a, 6b) and, in each intake pipe (5a, 5b), means for forming an aerodynamic gas motion of tumble type in the cylinder. Furthermore, for each intake pipe (5a, 5b), the intersection between intake pipe (5a, 5b) and calibration part (6a, 6b) occurs along a line non-parallel to the plane of the fire face. Besides, the inclination angle of this intersection is different for each pipe (5a, 5b).
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公开(公告)号：US11560828B2
公开(公告)日：2023-01-24
申请号：US17315990
申请日：2021-05-10
申请人： SUBARU CORPORATION
发明人： Kenta Kimoto , Masaaki Kato , Satoru Yamaguchi , Takumi Murata , Takeshi Tsuda , Akihisa Yoshino , Daisuke Miyashita
IPC分类号： F02B31/04 , F02B31/08 , F02F1/42 , F02M35/10 , F02M35/12 , F02M35/108 , F02B31/06 , F02F1/24 , F02B31/00
摘要： An engine includes a combustion chamber, a cylinder head, an intake valve, a partition wall plate, and a tumble valve. The cylinder head includes an intake port that communicates with the combustion chamber. The intake valve includes a head configured to open and close an open end of the intake port. The partition wall plate partitions the intake port into first and second passages. The tumble valve is configured to open and close either one of the first passage and the second passage. A cross sectional shape of the partition wall plate is defined on a basis of a shape of a gap that is surrounded by a contour of the head and a contour of the open end, as viewed in a reference direction. The reference direction is a direction from a reference point in the intake port to a gap between the open end and the head.
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公开(公告)号：US11530667B2
公开(公告)日：2022-12-20
申请号：US17420796
申请日：2019-12-25
发明人： Mitsutaka Kojima , Shinichi Murata , Hiroshi Ishii
摘要： A cylinder head (1) disclosed herein includes a cylinder head main body (10) having an intake port (3) communicating with a combustion chamber (2) of an engine; and an insulation member (20) being arranged at an inner side of the intake port (3), made of resin, and formed into an annular shape. A step part (14) is formed at a downstream side of the insulation member (20) in a flow direction of intake air in the intake port (3) such that the intake port (3) has a cross section perpendicular to the flow direction at the downstream side smaller than a cross section perpendicular to the flow direction at an upstream side of the flow direction; and an annular seal member (21) that seals a space between the insulation member (20) and the step part (14) is arranged between the insulation member (20) and the step part (14).
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公开(公告)号：US20220316419A1
公开(公告)日：2022-10-06
申请号：US17848198
申请日：2022-06-23
申请人： BRP US INC.
发明人： Justin JOHNSON , Joseph ZAMORA , Roger RAETZMAN
摘要： A reciprocating exhaust valve for a two-stroke internal combustion engine has a shaft for connection to a valve actuator, the shaft defining a reciprocation axis of the valve, the reciprocation axis defining a longitudinal direction of the valve; and a blade having: a first end having an arcuate edge, a second end connected to the shaft, two side portions, and a central portion. The blade has a first end portion adjacent the first end that includes a part of the central portion and of each of the two side portions. A width of the central portion is greater than a width of each of the side portions. In the first end portion, a thickness of the part of each of the two side portions is greater than a thickness of the part of the central portion.
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9.发明申请公开(公告)号：US20220260025A1
公开(公告)日：2022-08-18
申请号：US17651139
申请日：2022-02-15
摘要： An engine includes at least one cylinder, a first intake valve and a second intake valve associated with the cylinder, to control a flow of intake air from a first intake duct and a second intake duct, respectively. The two intake ducts communicate with a common intake manifold, so as to receive air at the same pressure. During the intake stage, in each cylinder operating cycle, initially an opening and closing movement of only the first intake valve is activated, while the second intake valve remains closed and, subsequently, an opening and closing movement of only said second intake valve is activated, while the first intake valve remains closed. In this way, the two air flows at the same pressure entering the cylinder give rise to a high turbulent kinetic energy, to the advantage of combustion efficiency and reduction of harmful exhaust emissions.
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公开(公告)号：US11415042B2
公开(公告)日：2022-08-16
申请号：US17422238
申请日：2020-01-13
摘要： The present invention relates to a gas intake pipe (2) for a cylinder of a thermal engine. The pipe comprises means for diverting the gas so as to generate a tumble type aerodynamic motion of the gas within the cylinder. The diversion means comprise at least a “ramp” shape (6) on the lower profile (12) of the pipe and a concave zone on the upper profile (10) of intake pipe (2).
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